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Resolves: PR middle-end/97027 - missing warning on buffer overflow storing a larger scalar into a smaller array gcc/ChangeLog: PR middle-end/97027 * tree-ssa-strlen.c (handle_assign): New function. (maybe_warn_overflow): Add argument. (nonzero_bytes_for_type): New function. (count_nonzero_bytes): Handle more tree types. Call nonzero_bytes_for_tye. (count_nonzero_bytes): Handle types. (handle_store): Handle stores from function calls. (strlen_check_and_optimize_call): Move code to handle_assign. Call it for assignments from function calls. gcc/testsuite/ChangeLog: PR middle-end/97027 * gcc.dg/Wstringop-overflow-15.c: Remove an xfail. * gcc.dg/Wstringop-overflow-47.c: Adjust xfails. * gcc.dg/torture/pr69170.c: Avoid valid warnings. * gcc.dg/torture/pr70025.c: Prune out a false positive. * gcc.dg/vect/pr97769.c: Initialize a loop control variable. * gcc.target/i386/pr92658-avx512bw-trunc.c: Increase buffer size to avoid overflow. * gcc.target/i386/pr92658-avx512f.c: Same. * gcc.dg/Wstringop-overflow-68.c: New test. * gcc.dg/Wstringop-overflow-69.c: New test. * gcc.dg/Wstringop-overflow-70.c: New test. * gcc.dg/Wstringop-overflow-71.c: New test. * gcc.dg/strlenopt-95.c: New test.
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